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Analysis
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max time kernel
148s -
max time network
141s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
29/12/2024, 10:32
Static task
static1
Behavioral task
behavioral1
Sample
b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
Resource
win10v2004-20241007-en
General
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Target
b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
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Size
815KB
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MD5
218d225011859a07ef0137e9314be2d0
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SHA1
5e1645cde252685e2fcfb8a93b88c104882ac6d3
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SHA256
b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab
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SHA512
ec4c3f21f52d9a4338478ceb1ed1d28704d570ae3d7314d0296c2fdd5f0a32be99222fa3fa58eaafde2471330855c49fbdcefdecf3d97b27722cc33df7e996ee
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SSDEEP
12288:SEJudv2Cy3nRH+BfcS6VC+bamRinL/6qmq3drGO5ddh+Zx1Fe3Lk6wHkBuDwzUY5:Yv43p4/6xVyLSqmg+VFe3LvCUX0gg8r
Malware Config
Extracted
djvu
http://acacaca.org/test1/get.php
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extension
.vvew
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offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
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payload_url
http://rgyui.top/dl/build2.exe
http://acacaca.org/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
resource yara_rule behavioral1/memory/2496-5-0x00000000004E0000-0x00000000005FB000-memory.dmp family_djvu behavioral1/memory/2832-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2832-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2832-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2832-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-50-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-56-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-67-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-68-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-65-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1072-69-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Djvu family
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Modifies file permissions 1 TTPs 1 IoCs
pid Process 2692 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\31dd479c-9680-455e-8307-348616a0fc65\\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe\" --AutoStart" b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 3 api.2ip.ua 4 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2496 set thread context of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 1980 set thread context of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 1072 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 1072 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2496 wrote to memory of 2832 2496 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 30 PID 2832 wrote to memory of 2692 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 31 PID 2832 wrote to memory of 2692 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 31 PID 2832 wrote to memory of 2692 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 31 PID 2832 wrote to memory of 2692 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 31 PID 2832 wrote to memory of 1980 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 33 PID 2832 wrote to memory of 1980 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 33 PID 2832 wrote to memory of 1980 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 33 PID 2832 wrote to memory of 1980 2832 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 33 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34 PID 1980 wrote to memory of 1072 1980 b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2496 -
C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2832 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\31dd479c-9680-455e-8307-348616a0fc65" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2692
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C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1980 -
C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1072
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD567e486b2f148a3fca863728242b6273e
SHA1452a84c183d7ea5b7c015b597e94af8eef66d44a
SHA256facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb
SHA512d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD565194add1e0a459c0ed8db371273b4ef
SHA1a93e205222aa651ed479f8f5762e821c7cdccba9
SHA256ecbc78bb96aec164d1e134ecb98154dae84e7e6e17cae6af6f3b3d89b3a54ea1
SHA512293d2307afdd13e7f521da75c8df45b0ddd94a04dd8face621e010774886b4417aa2ce7f60634072d83958da82ca969f94bc0e125169bb37a0dcc2bb4eace01b
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize342B
MD555687eceab008685ba12b68edaa92f48
SHA1cf0376b40ab78d9c2e79f279aa27e0bc7518d3d6
SHA256b6123e5f27c1e1af4515ea1142db5c5e7b9f2a83f6726c4cbd5ea5c4066de597
SHA51296ef49687f2ddbacfb7c198b84f70ab2c9b0cfe7e98f59b17f377ac8289a3309e5b651c406f72a6420dd0dee9ef01a72b2c9cfbd5c8bfc62b131ab4ebe2cfd0e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5b3868796c14d1162d57ca5b77b457e22
SHA112e800aaae5e1409e1f4fe970392e67c2c12cc35
SHA256a7a8898394b8df9f7cde3fc04dfaafef6919c02c619a9a5d90f8eaa9168f9342
SHA512a66d1782074405a72e7a0d77ba711caa5e01dcc1a036a380a120c120776093e3c56c143f53d0ac90cfee81d9e4edb735aa6a97c1c61441253cd75ee832c6c102
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C:\Users\Admin\AppData\Local\31dd479c-9680-455e-8307-348616a0fc65\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
Filesize815KB
MD5218d225011859a07ef0137e9314be2d0
SHA15e1645cde252685e2fcfb8a93b88c104882ac6d3
SHA256b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab
SHA512ec4c3f21f52d9a4338478ceb1ed1d28704d570ae3d7314d0296c2fdd5f0a32be99222fa3fa58eaafde2471330855c49fbdcefdecf3d97b27722cc33df7e996ee
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b